AEROSPACE ACRONYM & Abbreviation Guide

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December 2010

Avionics Magazine proudly presents the fifth edition of our biennial Aerospace Acronym & Abbreviation Guide. Updated with the latest terms from the magazine’s pages, this comprehensive guide has grown to more than 3,000 civil and military acronyms.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

  • O-QAR optical quick access recorder

  • O&M operations and maintenance

  • O&S operating and support

  • OAC oceanic area control center

  • OAS oceanic automation system

  • OASIS operational area satellite information system

  • OASIS operational and supportability implementation system

  • OASIS organic airborne and surface influence sweep

  • OASYS obstacle avoidance system

  • OAT operational acceptance test

  • OAT outside air temperature

  • OATS orbit and attitude tracking system

  • OBP operational build plan

  • OBS omnibearing selector

  • OBS optical bypass switch

  • OCA oceanic control area

  • OCC occasionally connected computing

  • OCC operations control center

  • OCD oceanic clearance delivery

  • OCIG Oceanic Communications Improvement Group

  • OCO overseas contingency operations

  • OCP oceanic clearance processor

  • OCTAS obstacle cable and terrain avoidance system

  • ODA open document architecture

  • ODA Organization Designation Authorization

  • ODAPS oceanic display and planning system

  • ODIAC operational requirements for ATM air/ground data communications (Eurocontrol)

  • ODID operational display and input development

  • ODIN observe, detect, identify, neutralize

  • ODL oceanic data link

  • ODL optical data link

  • OEI one engine inoperative

  • OEM original equipment manufacturer

  • OEP Operational Evolution Partnership (FAA)

  • OES Office of Emergency Services

  • OEU overhead electronics unit

  • OFDM orthogonal frequency division multiplexing

  • OFDPS oceanic flight data processing system

  • OFP operational flight program

  • OGE operational ground equipment

  • OHA operational hazard assessment

  • OHSC overhead stowage compartments

  • OHU overhead unit (HUD)

  • OI operational improvement

  • OID object identifier

  • OIG Office of Inspector General (U.S.)

  • OIS operational information systems

  • OIT onboard information terminal

  • OJT on-the-job training

  • OLAN onboard local area network

  • OLDI on-line data interchange

  • OLED organic LED

  • OM outer marker

  • OMB Office of Management and Budget (U.S.)

  • OMS onboard maintenance system

  • OMT object modeling technique

  • OMT onboard maintenance terminal

  • ONR Office of Naval Research (U.S.)

  • OOA object-oriented analysis

  • OOD object-oriented design

  • OODA observe, orient, decide and act

  • OOOI out/off/on/in

  • OPA operational performance assessment

  • OPAS overhead panel ARINC 629 system

  • OPBC overhead panel bus controller

  • OPD Optimized Profile Descent

  • OPS operations

  • OPS OPS per second

  • OPSPECS OPS specifications

  • OPU overspeed protection unit

  • OPV optionally piloted vehicle

  • OR operational requirements

  • ORB object request broker

  • ORD operational requirements document

  • ORD operations readiness demonstration

  • OS open service

  • OS operating system

  • OSA operational safety assessment

  • OSCAR Orbiting Satellite Carrying Amateur Radio

  • OSD Office of the Secretary of Defense (U.S.)

  • OSDS oceanic systems development support

  • OSE open systems environment

  • OSED operational service and environment definition

  • OSEIC operational service and environment information capture

  • OSGCS one system ground control station

  • OSI open systems interface/interconnection

  • OSIE OSI environment

  • OSI-RM OSI-reference model

  • OSJTF Open Systems Joint Task Force (U.S.)

  • OSPF open shortest path first

  • OSPGCS one system portable ground control station (U.S. Army)

  • OSR order status report

  • OSRVT One System Remote Video Terminal

  • OTA Office of Technology Assessment (U.S.)

  • OTA other transaction agreement

  • OT&E operational test and evaluation

  • OTFP operational traffic flow planning

  • OTH over the horizon

  • OTM-4D Oceanic Trajectory Management-4D

  • OTP Office of Telecommunications Policy (U.S.)

  • OTS off the shelf

  • OVHT overheat